42 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



flared distal of midpoint. Caudal margin evenly convex. With large 

 ovate pits or scrobiculi scattered over most of scutum. Largest 

 scrobiculi in core region, about lo microns in length (about four 

 times diameter of base of scutal seta). Typical submarginal scrobiculi 

 subequal to medial group. Pits in intermediate region only about 3 to 

 4 microns in diameter, as are those between and anterior to SB. With 

 micropunctae scattered over remainder of scutum. AL setae almost in 

 vertical line with SB; "shoulders" undeveloped at point of insertion. j 

 AL setae fairly short, thin, sparsely plumed. PL setae similar but ; 

 about twice as long. The 2 pairs of usurped setae submedial in posi- 

 tion; resembling true scutal setae. The distance from PL to PPL-i j 

 about one and a half times that from PPL-i to PPL-2. Sensillary j 

 bases slightly closer to line of ALs than PLs. With an inconspicuous j 

 ridge anterior to sensillary bases. Sensillae clavate, three and a half j 

 to four times as long as broad (excluding petiole). With 2 or 3 pairs 

 of dorsal setae contiguous to lateral margin of scutum ; at times these 

 appearing as if on scutum, especially since margins of dorsal plate fre- 

 quently excised at these sites. PPJV-i is 61 (±7); PPW-2, 50 

 ( ±6) ; PPP-i, 115 ( ±10) ; PPP-2, 60 ( ±7). Body setae: Dorsal 



STANDARD MEASUREMENTS IN MICRONS 



^^cq^^ °rKj^^ P^V PE PK P^ 



^0,(0^0, ^'Tia.Q Coxa II SD ASB Tarsus 111 

 Holotype, 



No. B-19327-7 43 91 50 20 219 40 20 37 40 91/66^1.38 0.30 4.6 91/67=1.36 



Paratypes (20) : 



Mean 43 94 48 18 211 40 18 36 38 1.40 0.39 $.2 1.45 



Range +or— 4 8 3 2 11 4 5 3 5 0.05 o.io 0.6 o.og 



setae resembling PLs but slightly stouter; about 14 to 18 (usually 16) 

 in number, generally well spaced on dorsum, appearing singly rather 

 than in horizontal or arched rows. With about 64 to 70 ventral setae 

 of which about 20 are postanals but nevertheless considerably smaller 

 than dorsals. True ventrals about 16 to 18 microns in length, thin, 

 very sparsely plumed. Legs: Coxae heavily punctate, shagreened. 

 Coxa III with seta inserted in anterolateral quadrant but nonmar- 

 ginal; very broad (fig. 121; cf. fig. 9 for more typical G. exilis) — 

 ratio of coxal length to width, 71 to 66=1.1. First pair of sternal 

 setae about 29 microns in length ; second pair about 21 microns, its 

 base at level of midline of coxa III. Sensory setae as in G. exilis, 

 new species. 



Type material. — Holotype (No. B-19327-7) ex Rattus whiteheadi 

 whiteheadi Thomas, North Borneo, Mount Kinabalu, Tenompak, ele- 

 vation 4,500 feet (R. Traub, for joint U. S. Army-Colonial Office 

 Medical Research Unit), August 21, 1953. Paratypes as follows: i, 



